Design for a blood clot detection instrument



FIG. 1 is a front left top perspective view of a blood clot detection instrument showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a left side elevational view thereof, the right side elevational view being a _mirror image of FIG. 4;

FIG. 5 is a rear elevational view in which the details shown upon the upper horizontal surfaces in FIGS. 3 and 4 are omitted for ease of illustration. 

The ornamental design of a blood clot detection instrument, as shown and described. 